Collecting base for a marble game ramp



FIG. 1 is a perspective view of the collecting base for a marble game ramp showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a collecting base for a marble game ramp, as shown and described. 